Journal
INTERNATIONAL JOURNAL OF QUANTUM INFORMATION
Volume 18, Issue 1, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0219749919410156
Keywords
Optical imaging; quantum estimation; super-resolution
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Funding
- European Union under the European Regional Development Fund
- Foundation for Polish Science TEAM project Quantum Optical Communications Systems
- Foundation for Polish Science
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We consider the problem of estimating the spatial separation between two mutually incoherent point light sources using the super-resolution imaging technique based on spatial mode demultiplexing (SPADE) with noisy detectors. We show that in the presence of noise, the resolution of the measurement is limited by the signal-to-noise ratio (SNR) and the minimum resolvable spatial separation has a characteristic dependence of similar to SNR-1/2. Several detection techniques, including direct photon counting, as well as homodyne and heterodyne detection are considered.
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